76770013 has 4 divisors (see below), whose sum is σ = 80810560. Its totient is φ = 72729468.

The previous prime is 76769993. The next prime is 76770037. The reversal of 76770013 is 31007767.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76770013 - 2¹³ = 76761821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76770073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020245 + ... + 2020282.

It is an arithmetic number, because the mean of its divisors is an integer number (20202640).

Almost surely, 2^76770013 is an apocalyptic number.

It is an amenable number.

76770013 is a deficient number, since it is larger than the sum of its proper divisors (4040547).

76770013 is a wasteful number, since it uses less digits than its factorization.

76770013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040546.

The product of its (nonzero) digits is 6174, while the sum is 31.

The square root of 76770013 is about 8761.8498617586. The cubic root of 76770013 is about 425.0080976542.

The spelling of 76770013 in words is "seventy-six million, seven hundred seventy thousand, thirteen".